A letter from Tatewaki recounting what really took place in Namamugi Incident reached Tenshō-in. Having learned the truth, she maintained that the Shogunate, together with Satsuma, needed to apologize to Britain. Meanwhile, in Kyoto, the Chōshū group came to dominate the political scene, defeating the Satsuma group and its leaders Shimazu Hisamitsu and Iwakura Tomomi.